VisGuard
The Sigrist VisGuard is your partner in the safety and monitoring of road and rail tunnels. To ensure safety in a critical tunnel application you need to have dependable information on
- Visibility measurement
- Ventilation control
- Early fire/smoke detection in road and rail tunnels
- Dust concentration in air
- Detection of oil mist
Visibility, CO concentration, and sometimes NO concentration are vital criteria for assessing air quality in road tunnels. These parameters are used for controlling the ventilation system in order to minimise energy consumption and also for closing down the tunnel whenever pre-established safety limits are exceeded.
The VisGuard is available in different versions: In-situ, Extractive or Mini-extractive Installation
